Warsaw, Indiana, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Warsaw, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Warsaw lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Warsaw — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Warsaw — the short answer
Warsaw, Indiana: USDA zone 6a, about 204 days between hard freezes, across 9K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~204
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 9K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 6a is Warsaw's average, not your lot's — a low corner or a tree line moves it. Against Warsaw's 204-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Warsaw
Each reading below is measured for Warsaw itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWarsaw runs about 204 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredWarsaw sits in USDA hardiness zone 6a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Warsaw is in
Warsaw sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Warsaw's own centroid rather than borrowed from Kosciusko County.
What Grows in Warsaw
Every plant below cleared Warsaw's own zone 6a and its 204-day season. Each card opens that plant's Indiana profile. How we score.
Is it too late to plant in Warsaw?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 14; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 1 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Warsaw
Spotted lanternfly documented 26 miles from Warsaw, first recorded 2023. What to watch for.
What's on the federal record near Warsaw
Closest first, within ~10 miles of Warsaw. Listing isn't leaking, and distance isn't exposure.
- JSP IncorporatedUnderground Storage Tanks · 1100 ft
- LEWIS OIL INCORPORATEDUnderground Storage Tanks · 1100 ft
- KOORS AMOCOUnderground Storage Tanks · 1400 ft
- North Central Cooperative IncorporatedUnderground Storage Tanks · 1500 ft
- UNION TOOL CORP THEBrownfields · 1600 ft
- WARSAW FOUNDRY COMPANY INCBrownfields · 1800 ft
- Warsaw GaswayUnderground Storage Tanks · 1800 ft
- United Service Station 6077Underground Storage Tanks · 1800 ft
- ZIMMER BIOMET INCORPORATED PLANT 3Toxics Release Inventory · 2300 ft
- SHERWIN WILLIAMS 1904Brownfields · 2500 ft
- MONTEITH TIRE - WARSAW-TREATMENT PLANT #1Brownfields · 0.5 mi
- LRC PRODUCTS INCORPORATEDUnderground Storage Tanks · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Warsaw's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Warsaw.
Sources Checked
within ~10 miles of Warsaw
Severity Distribution
within ~10 miles of Warsaw
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Warsaw, Toxics Release Inventory runs higher than the national average — 48 sites within ~10 miles of Warsaw. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Warsaw
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Warsaw average
Your land is one point inside Warsaw
Everything above resolves to Warsaw as a whole — one PHZM band and one 28°F frost record, read across 9K acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at city scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Warsaw Average
Warsaw Average
- ●USDA Zones 6a, averaged across Warsaw
- ●One soil character for all of Warsaw
- ●Frost dates read at Warsaw's scale: Apr 11 to Nov 1
YOUR Parcel
- ✓Your exact zone, not Warsaw's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Warsaw
Pull a site-specific report for your exact address in Warsaw, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Warsaw averages can't show:
We read public map data around Warsaw — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Warsaw average
How we know this about Warsaw
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Warsaw’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at city grain anywhere on this page — there is no city-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Warsaw
When does frost risk typically end in Warsaw?
The last hard freeze (28°F) in Warsaw typically lands around Apr 11, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about May 2.
When is the first frost in Warsaw?
The first hard freeze (28°F) in Warsaw typically arrives around Nov 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 18, so the watching starts about Oct 2 — about 204 days after the spring freeze cleared.
How long is the growing season in Warsaw?
Measured between 28°F hard freezes, Warsaw sees about 204 frost-free days — roughly Apr 11 through Nov 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 2 to Oct 18, about 169 days.
Is the soil safe to grow vegetables in Warsaw?
The federal record around Warsaw is a meaningful one — 362 documented sites, mostly Underground Storage Tanks entries (201), the nearest Underground Storage Tanks record about 0.2 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Warsaw?
From about Oct 2 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 1 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Warsaw's scale — its 6a band and its 204-day season. Your yard writes its own version of Warsaw's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Warsaw’s own scale
7 of the readings below were taken at Warsaw's own scale — its own ~204-day season between 28°F freezes, the 8,669 acres it covers and 362 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Warsaw's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Warsaw's own 28°F hard-freeze dates, about Apr 11 and Nov 1 and the ~204-day span between themNOAA 1991–2020 Climate Normals
- 362 documented contamination sites on the federal record near Warsaw, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Warsaw's boundary and the 8,669 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~204-day seasonGrowable Ground crop-matching engine
- The ecoregion at Warsaw's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Warsawlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Warsaw's 8,669 acres read through its county's SSURGO summaryfrom Kosciusko County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kosciusko County
- The growing challenges every Indiana grower plans around — written at state scale, so they stay on the state guidefrom Indiana
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Kosciusko County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Warsaw's 8,669 acreswhy one lot differs from the next →
- Which side of Warsaw you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 8,669 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Warsaw-wide figureread your own land →
More in Indiana
Wider growing context
What grows across IndianaWarsaw sits outside our named growing regions, so Indiana as a whole is its closest context here.
Nearby growing guides